if (document.images) { 
image1 = new Image 
image2 = new Image
image3 = new Image 
image4 = new Image 
image5 = new Image 
image6 = new Image 
image7 = new Image 
image8 = new Image 

image1a = new Image 
image2a = new Image
image3a = new Image 
image4a = new Image 
image5a = new Image 
image6a = new Image 
image7a = new Image 
image8a = new Image 

image1.src = 'images/home_on.gif' 
image2.src = 'images/pricequotes_on.gif' 
image3.src = 'images/howtoorder_on.gif' 
image4.src = 'images/orderrefills_on.gif' 
image5.src = 'images/questions_on.gif' 
image6.src = 'images/aboutus_on.gif' 
image7.src = 'images/ourpolicies_on.gif' 
image8.src = 'images/contactus_on.gif' 

image1a.src = 'images/home_off.gif' 
image2a.src = 'images/pricequotes_off.gif' 
image3a.src = 'images/howtoorder_off.gif' 
image4a.src = 'images/orderrefills_off.gif' 
image5a.src = 'images/questions_off.gif' 
image6a.src = 'images/aboutus_off.gif' 
image7a.src = 'images/ourpolicies_off.gif' 
image8a.src = 'images/contactus_off.gif' 

}